The firmware in this device is beyond excellent. It is easy to use, contains helpful online instructions, and has a clearly written PDF manual.
The fact that the LAN and WAN ports are fixed, not configurable, makes this product easy to set up. If there was a port that could be used as either LAN or WAN, that would make setup harder.
Security is excellent as well. There is no Wi-Fi Protected Setup (WPS), which can be hacked in only a few hours. It may be marketed as a consumer grade router, but it feels like business class.
However, it has one major flaw. There is no IPv6 capability at all. So the router cannot hand out IPv6 addresses to client computers. Since this major, expected functionality is missing, I cannot recommend this router.